/* Straight-line strength reduction control flow variation with incr = -1. */ | |
/* { dg-do compile } */ | |
/* { dg-options "-O3 -fdump-tree-optimized" } */ | |
int | |
f (int n, int c, int s) | |
{ | |
int a1, a2, a3, a4, x1, x2, x3, x4; | |
a1 = 4 * s; | |
x1 = c + a1; | |
x2 = x3 = x4 = c; | |
if (n > 64) | |
{ | |
a2 = 3 * s; | |
x2 = c + a2; | |
a3 = 2 * s; | |
x3 = c + a3; | |
} | |
else | |
{ | |
a4 = 3 * s; | |
x4 = c + a4; | |
} | |
return x1 + x2 + x3 + x4; | |
} | |
/* { dg-final { scan-tree-dump-times " \\* " 1 "optimized" } } */ |